Light Summary

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Encyclopedia Articles (7)

Light
Light is a form of electromagnetic radiation. Other types of electromagnetic radiation include radio waves, microwaves, infrared, ultraviolet, x-rays, and gamma rays. All electromagnetic waves p...
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Lighting the Ancient World
Overview
Until the nineteenth century&#x2014;ironically, on the eve of the light bulb&#x0027;s invention&#x2014;methods of lighting remained more or less unchanged since ear...
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Light
Light, also known as visible radiation, is electromagnetic radiation within the wavelength band that can be perceived by the human eye. This range is from about 380-780 nanometers (or nm; 1 nm =...
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Light
Light can be narrowly defined as the visible portion of the electromagnetic spectrum. A broader definition would include infrared, ultraviolet, and x-ray wavelengths, which are not visible to th...
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Light
Light can be narrowly defined as the visible portion of the electromagnetic spectrum. A broader definition would include infrared, ultraviolet, and x-ray wavelengths, which are not visible to th...
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Light, Reflection and Refraction Of
Whenever a ray of light strikes a surface, at least some of the light is reflected --that is, it bounces off the surface toward a new direction. The surface does no...
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Light, Theories Of
The nature of light has been the subject of controversy for thousands of years. The debate over the theories of light has included such prominent scientists as Euclid, Galileo, Isaa...
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